Finding the Fourth Proportional to 678,121.22, 935,844.10 and 376,321.70
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Solution
The fourth proportional to 678,121.22, 935,844.10 and 376,321.70 is: 519,344.38
Step by Step Solution
- Step 1: Write the proportion equation
678,121.22 : 935,844.10 = 376,321.70 : x - Step 2: Convert to fraction form
678,121.22/935,844.10 = 376,321.70/x - Step 3: Cross multiply
678,121.22x = 935,844.10 × 376,321.70 - Step 4: Simplify right side
678,121.22x = 352,178,442,646.97 - Step 5: Solve for x
x = 352,178,442,646.97/678,121.22 - Step 6: Final answer
x = 519,344.38
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.